Selector mechanism floor unit



J1me 1951 s. MIGNOCCHI ETAL 2,553,622

SELECTOR MECHANISM FLOOR UNIT Filed Oct. 15, 1945 4 Sheets-Sheet 1 I ifINVENTORS SERGE M/GNOCCH/ LOU/S M/GNOCCH/ BY S I m ATTORNEY June 1951 s.MIGNOCCHI ET AL 2,553,622

SELECTOR MECHANISM FLOOR UNIT Filed Oct. 15, 1945 4 Sheets-Sheet 2INVENTORS SERGE M/GNOCCH/ LOU/S M/GNOCCH/ June 6, 1951 s. MIGNOCCHI ETAL 2,558,622

SELECTOR MECHANISM FLOOR UNIT Filed Oct. 15, 1945 4 Sheets-Sheet 3 nilHlu HERE". 5'' :g

giaiiiiliil i lg 2::22 I-laga IN V EN TORS SERGE M/G/VOCCH/ LOU/SM/G/VOC CH/ ATTORNEY Patented June 26, 1951 SELECTOR MECHANISM FLOORUNIT Serge Mignocchi and Louis Mignocchi, New York N. Y., assignors toSerge Elevator (30., Inc.,

Bronx, N. Y.

Application October 15, 1945, Serial No. 622,464

17 Claims. 1

The present invention relates to a floor selector utilized in automaticelevator systems, such as the push-button type.

In elevator systems of this type, in order to automatically bring thecar to a selected floor in response to a call impressed with apush-button in the hall or in the car, certain mechanism is used forautomatically closing and opening the electrical circuits which controlthe operation of the motors used in the system. This mechanism includesdirection switches, which determine the direction of motion of theelevator car in response to a call, a relay that corresponds to eachfloor and switches that are opened and closed by the car movement tocontrol the floor relay and the car stopping relay. These elements andthe mechanical means that operate them and which is directly connectedto the car movement are together known as the floor selector.

Heretofore these elements were mounted on a panel board in groupscorresponding to each other and not to the particular floor for whichthey operated the car and were usually therefor so separated from eachother that floor selectors of the prior art occupied relativelyconsiderable space. Further, with prior art floor selectors, since allthe elements of the selector corresponding to a particular floor werenot grouped together in the same space as a unit, they did not lendthemselves to ready and easy inspection for repair or replacement shouldthe selector for that particular door, for some reason be out of order.

The present invention therefore contemplates an integral unit for eachfloor that has mounted on it all the switches and contacts thatcorrespond to each floor and which integral unit is so arranged that theelements thereof will be operated in proper sequence by the carmovement.

The present invention contemplates the provision of a floor unit thathas mounted on it'a floor relay and the contacts therefor, the up anddown direction switches, the switch contacts which control operation ofthe floor relay and the stopping relay and a cam that is so constructedand arranged that the switches are opened and closed in proper sequenceso that the car will properly respond to the signal impressed on thehall or the car button and place the system in condition to stop the carwhen it reaches the floor to which it has been called.

There is thus provided a floor selector unit in which all of theelements of the automatic system corresponding to each floor are groupedtogether in a comparatively small space so that the selector mechanismis small and compact lends itself to ready and easy inspection.

As is well known, the distance between each floor may vary or theposition of the follower that operates the floor selector may changesomewhat during operation so that it will not accurately correspond tothe position reached by the elevator at the floor corresponding to these lector unit so that the car may be stopped above or below the floorlevel, a circumstance that it is desired to avoid.

The present invention therefore also contemplates the provision in adirectly connected floor of a readily adjustable means for each selectorunit whereby the position thereof relative to the position of the car inthe hatchway may be adjusted in the event that they become misadjusted,so that the car will be stopped when it is positioned at the floorcorresponding to the selector unit.

The present invention still further contemplates the provision of anon-rigid resilient connection between the selector unit and thefollower that is driven by the movement of the car and " so that nostrain is placed on the connection as the follower travels past theconnection thereby eliminating probability of resulting damage to theconnecting means.

The present invention still further contemplates the provision of afloor unit for a selector mechanism that is standard in all its partsand may be utilized without change to various types of buildings andvarious types of automatic elevator systems.

These, other and further objects, advantages and uses of the presentinvention will be clear from the description which follows and the.rawings related thereto in which:

Fig. 1 is a front elevation of a selector mechanism, according to thepresent invention, the front cover being broken away to show thearrangement of the floor unit comprising it and the traveller positionedat a terminal;

Fig. 2 is a partial front elevation thereof, the follower position atthe other terminal;

Fig. 3 is a section on the line 22 of Fig. 1;

Fig. 4 is a lateral section across the traveler or cross head H! of Fig.3;

Fig. 5 is a partial plan view of Fig. 2;

Fig. 6 is a side elevation of a floor selector unit according to myinvention, viewed from the side shown in Fig. 2;

Fig. 7 is a section on the line tA-AA of Fig. 4;

Fig. 8 is a partial section looking up, across the selector;

Fig. 9 is a section on the line -5 of Fig. 4;

Fig. 10 is a top front perspective view of the cam means that operatesthe switches of the selector unit;

Fig. 11 is a side elevation of the floor selector unit viewed from theright of Fig. 1 and showing the cam in one position of its operation;

Fig. 12 is a partial side elevation of the selector unit cam in anotherposition of its operation;

Fig. 13 is a section on the line 9-9 of Fig. 8;

Fig. 14 is a side elevation of the selector cam unit in still anotherposition of its operation;

Fig. 15 is a section on the line H-H of Fig. 10;

Fig. 16 is a section on the line i2-i2 of Fig. 7;

Fig. 17 is a rear elevation of the operative cam showing an adjustedposition of the arms in broken lines;

Fig. 18 is a schematic outline of one cam nose;

Fig. 19 is a schematic outline of the other cam nose;

Fig. 20 is a partial schematic wiring diagram, just sufficient for anunderstanding of the invention.

Referring now to the drawings and particularly to Figs. 1, 2, 3 and 5, afloor unit [0, one for each floor served by the elevator system, in theillus tration six floors and a basement, is arranged in the housing [2and secured thereby by any satis factory means, provision being madetherefore as by the openings 14 in the member 16, which will receive therequired supporting crews (Fig. 6).

The traveler or cross-head 18, which drives the operating cam 29, ofeach unit and which cams are mounted for oscillation on the shaft 22 ineach selector unit 19, is driven by the worm shaft 24.

The cam 20 and shaft 22 are tensioned in operative position by means ofthe spring 23 expanding between the washers and 2?.

The shaft 24 is journaled in suitable bearings mounted in the side walls25 and 28 and is operatively driven through the gear 32 which isconnected directly to the elevator car in any suitable manner so thatthe shaft 24 will move in accordance with the movement of the elevatorcar.

The traveler i8 is provided with internai threads (not shown), whichmesh with the worm threads on the shaft 24 so that rotation of thelatter will cause operative reciprocation of the traveler between theselector unit corresponding to one terminal floor, such as the basementof the building, and the selector unit 3'6, corresponding to the otherterminal floor, such as the top or sixth floor of the building (Figs. 1and 2).

Movement of the traveler iii from the one terminal position illustratedin Fig. l at the unit 34 to its other terminal position at the unit 3'6(Fig. 2) and corresponding to the movement of the elevator car bringsthe follower 38 extendin therefrom into engagement with the resilientarm 42 mounted on a cam 20 positioned in its path of movement.

When the car is positioned at a floor corresponding to a unit iii, thefollower 38 rests between the arms 46 and 42 of that floor unit. This isillustrated in Fig. 1, when the car is at the basement floor and Fig. 2when the car is at the sixth or top floor of the building.

In these positions, the arms 49 and 42 are in a substantially straightvertical position, whereat as will be described, the up and downdirection switches are opened by the selector unit and the stopping coilswitch has been closed to stop the car.

As the follower 38 engages the arm 42 and continues its movement, eachcam 29, the arm 42 of which is engaged, will be rotated from theposition illustrated in Figs. 1, 5 and 11, whereat they point to thetraveler that is positioned below them, into the position illustrated inFigs. 2 and 14, whereatin the latter position the follower 38 hascleared the arm 49 and moved past it, the arms 48 and 42 now pointing tothe traveler posi tioned above them.

As we shall in more detail describe, when the traveler is below a unitthe up directional switches i. for the floors above it will have beenclosed and the down directional switches opened by the cam movementoperated by the movement of the follower 33 against the arm 42 and whenthe tray-- eler is above a unit, the down directional switches for thefloors above it will have been closed and the up directional switchesopened by the cam movement operated by the movement of the fol lower 38against the arm 49.

As will be also explained in further detail this movement of the cam 20about the shaft 22 also operates the switch contacts (to which we wililater refer) of the floor selector which control the starting and thestopping of the car in response to the registration of a call.

Movement of the traveler, under the influence of the car as it drivesthe shaft 24, from its upper limit position at the unit 36, brings thefollower 38 into engagement with the other resilient arm 49 to move thecam, the arm of which is engaged about its shaft 22 in the oppositedirection to again cause the switch contacts to close and open for thepurposes that we shall further describe.

It will thus be seen that movement of the traveler I3, by the elevatorcar, oscillates each cam 20 as it moves therepast in either direction,movement from right to left of Fig. 1 corresponding to movement of theelevator car from the basement of the building to the top floor thereofand movement from left to right of Fig. 1 corresponding to movement ofthe elevator car from the top of the building, to the basement.

In order to insure that the traveler l8 operates in a trul horizontalposition so that it will be relieved of strain and insure unvaryingengagement of the arms 42 and 42 by the follower 38, we mount thetraveler H! on the angle support 44, so that the traveler l8reciprocably slides thereacross between the right and left of Fig. 1,

The follower l 8 is provided with the upstanding elements H and 2|, inthe space between which the member [9 is seated, the elements l! and 19being integral and connected at the underside of the follower.

The member I!) is pivoted to the follow-er l8 by means of the pin 23 sothat it may be raised in rotation in a counter clockwise direction asviewed in Fig. 2 and lowered, when rotated in a clockwise direction asviewed in Fig. 2, by the spring 48.

The angle 46 is secured to the underside of the follower l8, whichconnected the elements I! and 2!. The horizontal leg of the angle 46 isspaced from the underside of the follower I8. In the space formedthereby, the horizontal leg of the stationary angle 44 is seated.

This construction thereby prevents any. rotation or displacement of thefollower in a counter clockwise or clockwise direction about the shaft24, as viewed in Fi .2, under the influence of the movement of thetraveler I8 by the worm gear 32.

The angle support 44 may be secured in any suitable manner in thehousing I and the angle 46 secured in any suitable manner to thefollower I8. Thus, it will be recognized that the angle 46 reoiprocatesas a unit with the follower on the stationary angle support 44.

The traveler I8, which moves on the angle 44 thereacross, is resilientlyheld thereon by means of the tension spring 48, one end of which issecured to the head 50 mounted on the internally threaded collar 52extending from the traveler and which meshes with the thereads 32. Theother end of the spring 48 is secured to the pin 54 which is secured tothe member I9 and which pin extends down through the elongated opening25 in the integral connection between the elements I1 damage to thetraveler and the arms 40 and 42 in the event of such displacement. Thetraveler I8 is thereby permitted to pass over a thus misplaced selectorunit 34 because the member I9 may be raised up against the tension ofthe spring 48 when the follower 38 engages an arm of the misplacedselector unit.

- On return of the traveler I8 in the opposite direction of itsmovement, the misplaced selector unit is now in the proper up or downelevator position corresponding to that of all the other selector units.

Referring now particularly to Figs. 6 and 9, each unit .I0, ispreferably built from a bracket 56 on one face 58 of which the floorrelay 60 is mounted as by any satisfactory means. Separating the face 58from the relay coil 60, we provide the insulating member 62 on one sideof which is secured one lead 64 (Fig. 11) and on the other side of whichis secured one lead 66 (Fig. 6), to which leads reference will befurther made when the schematic wiring diagram is described. At thispoint, it is necessary to point out only that the lead 64 is free at oneend so that it will be connected to one side L2 of the line.

Extending down through the opening 68 in the horizontal face I0 of thebracket 58, we provide the carrying member "on which the floor relayarmature I4 is mounted. Riveted to the armature 14, We provide theinsulated switch member I6 through the opening I8 of which the movablecontact elements 82 and 84 extend. The membres 82 and 84 are connectedin parallel by the lead 85 and are secured to one side of the line LI bythe lead 81.

When the circuit through the relay coil 60 is closed by a call or carbutton for a particular floor, as an example say the top or sixth flooras will hereafter be explained, the armature 14 of the unitcorresponding thereto, say 36, is attracted against the tension of thespring 86 (one end of which is secured to the lug 88 on the face I0 andthe other end of which is secured to the armature carrying member 72) tobring the terminal 88 on the element 82 into engagement with theterminal 9I on the member 92 and to v bring the terminal on the element84 into engagement with the terminal 94 on the member 96 to close therespective switches which they comprise.

When the armature I4 is released, it is returned to normal position bythe spring 86 on the pivot formed by the face I0 on which the armaturecarrying member 12 is mounted to thereby disengage the contact 90 fromthe contact 94 and the contact 88 from the contact 9| and thus open therespective switches formed by these contacts.

Referring now to Fig. 1, in this position, the traveler l8 and follower38 have been moved to the lowermost position whereat the elevator carhasbeen stopped at the basement floor so that all of the cams 20 for eachselector unit above the basement floor have been rotated into thepositions illustrated, pointing to the traveler, whereat the downdirection switches have been opened and all the up direction switchesclosed. We shall now describe how this is accomplished by the selectorunit embodying the present invention.

Referring to Fig. 10, each cam 20 on one face 96 thereof is providedwith a nose 98 which is engaged by the cam follower I00 riveted to theresilient arm I 02. The cam follower I 00 comprises a roller I04 whichrides on the face of the cam nose 98 against which it is held by theresilient arm I02 (see Fig. 8 and Fig. 5). In Fig. 3 one of the arms ofthe starting and stopping control switches in rear of the directionalswitches now being described is broken away for clarity in depicting thestructure, as is done in Fig. 6.

Intermediate the resilient arm I02, we provide on each face thereof acontact I08 and a contact I08 and on the somewhat resilient arms III)and II! the contacts I I4 and I I6. The contacts IIlIi and I I4constitute an up-direction switch and the contacts I08 and H6 adown-direction switch. When the cam 20 is oscillated so that the camfollower is positioned at the lowest part II 8 of the cam nose 98, thetension of the arm I02 forces the cam follower thereagainst to bring theterminal I06 against the terminal H4 and thus close the up directionswitch (see Figs. 10 and 19).

This is shown in the position of the cams as illustrated in Fig. 1 andwill occur when the cams are rotated in a clockwise direction as viewedin Fig. 1 corresponding to the down travel of the elevator car. Thuswhen the car is traveling down the cams of all selector unitscorresponding to floors above the car will have been rotated into theposition illustrated in Fig. 1 since the traveler I8 has moved past theunit corresponding thereto.

However when the cams are rotated in a counter-clockwise directioncorresponding to the up travel of the elevator car the cams 20 will berotated in the opposite direction, to assume the position illustrated inFig. 2. As the cam moves into this position, the high point H9 of thecam nose 98 will be brought against the follower I00 to thereby move thearm I02 toward the arm I I2 to bring the terminal I08 into engagementwith the terminal I I6 and the terminal I06 away from the terminal II4to close the down directional switch and open the up directional switch.

When, however, the car reaches a particular floor, the follower 38 ispositioned between the arms 40 and 42, which are then in an uprightposition with the traveler therebetween of the floor corresponding tothat unit. At this time the follower I00 is at an intermediate positionl 2 l of dwell on the nose 98 Whereat contact H16, is disengaged fromcontact H4 and contact 38 is disengaged from contact H6. Thus in thisneutral position, when the car is at a floor corresponding tothatselector unit, both up and down directional switches are opened so thatif a call is registered for that floor no circuit will be made througheither the up or down directional switch f r that floor but for callsregistered above or below the car, proper circuits will be made throughthe up or down directional switches of the corresponding floor selectorunit.

That is, if the car has been moved below a floor the up directionalswitch corresponding to that floor will have been closed so that a callwill be registered for that floor by closing the circult through the updirectional switch corresponding to. the floor but if the car is abovethe floor at which the call is registered the circuit will be madethrough the down directional switch corresponding to the floor.

When the car is positioned at the floor, the hall or car button of whichis operated, the car will not be moved in either direction since neitherthe up coil or down coil may be energized because the contacts 495 and18 are positioned out of contact with the corresponding contacts H 2 and5 l6, the follower Hi being positioned at the intermediate or neutralpoint of dwell I21. It will of course be understood that impressing thehall or car button efiects the opening of the car doors by conventionalmeans and electrical circuits which are not shown since they form nopart of the present invention and are well known.

The bases of the members or reeds 84, 95, I92,

HQ and H2 are insulated from each other, as

by the fiber insulation iii, and are mounted on the member if; as by theelongated screw H5 extending through the member and the end plate Ill.The member or reed N32 has the lead HS secured thereto, the member orreed H8 having the lead I28 secured thereto and the member or reed H2having the lead E22 secured thereto (Fig. 13). The lead H8 is connectedto the member or reed 8d and the member 96 is connected to the lead 9!(Fig. 6)

The two members or reeds 92 and 36 are connected in parallel by means ofthe jump wire 55. Since the floor units are separate individualstructures, the other ends of the leads I28 and V22 are free so thatthey may be connected to the respective upv and down coil terminals.

In order to understand the operation of the floor unit with respect tostarting and stopping oi the car in response to a call registered by thehall or car buttons, reference will now be made more particularly toFigs. 11 to 16 in conjunction, with the schematic wiring diagramillustrated in Fig. 29 with respect to the schematic wiring diagram,attention is called to the fact that only two circuit lines Li and L2are shown and only'such elements of a conventional elevator system asare necessary for an understanding :of our invention; switch contactsbeing shown in the open or closed position assumed by them when the caris at rest at a floor. The wiring diagram for the elements correspondingto but a single floor are shownin Fig. 15 since it is merelyillustrative of the operation of a sllector mechanism supplied with afloor unit according to our invention.

Upon closing either the hall button E-ZS or the car button 133 for anyiioor to which the car i to re p nd, a i cuit i mad ro gh the floo el yi cor esp nd n to that QQ through the ordinar l clos c m a xmo ntcd n tfloor n t (whic sha be d sc ibed on. which t ela co l or that o r alsomounted.-

In der to in se uence o en and lose t ese t rmin a h c is m e in the shewe arrange on each cam 29 01 a floor unit I", e no e E5 on the other sde of he f ce 96 o the 2a an th pera io f wh ch we shall now describe.

' n the pes cn illustrated inv Fi ref rin i t e es ipt o hi h l s. secifically however to Figs. '10 to 16 and 18, the iollowfil wh ch al o.prefe bl ha th r lle -42, or a cam x t on th it e lear m or a em fleetis nqsiticned at the lowest point hid of the earn nose I32 on one sidethereof (the down side). The follower (I is mounted on the resilientmember or reed {46 so that the roller {42 is always held against th faceof the cam 29 and in this position pushes the terminal hi8 into contactwith the terminal 55.8 .on the member I52. On the other side of themember 32 is mounted another terminal E54 which is pushed into contactwith the terminal 1.55 on the member E58. The resiliency of the member545 brings the terminal Hill .on the other face thereof out ofengagement with the terminal 182 on the member or reed I53. T -:3 i h oio s um d by th c m f9? the units above the lowermost floor the Switchesformed by the contacts 53 and i511 and the contacts I5 3 and 155 areclosed but the switch formed by the contacts :52 and lid is open. Itshould at this point also be recognized that the follower I06 is at thelowest point 11-5 on the cam nose 88 to concurrently close the switch(H4 and N15) to the up coil and open the switch (898 and US) to the downcoil, all of which occurs in those floor units of the floors above whichthe car is positioned.

Thus a circuit will be made from Ll through a hall button 29 or carbutton 13!}, the lead I (one end ofwhich is connected to the mem: bar158 and the other end of which is iree for connection in the elevatorsystem) the switches formed by the contacts I55 and $54, terminals 15.3and i 13, the floor relay 6;] to the line L2 (Fig. 20). The floor relayis thus energiaed {to close the floor relay contacts 88 and 9| and 90and 9Q.

It will be understood that Fig. 11 illustrates the position of the cam28 assumed by it for all fioor units above the ear, in the illustrgationFig. l for all units above unit 34%; Fig. 12 illustrates the position ofthe cam assumed by ;it for the floor unit corresponding to the floor atwhich the cam positioned, in the illustration Fig. l the unit 3 and Fig.14 illustrates the position assumed by the cam for all floor units belowthe car, in the illustration Fig.2, the units below the unit 36.

The members or reeds M6, I52, I53 and 16.4 are mounted on the element l6between it and the plate E69 by means of the set screw Ill and areseparated from each other by any suitable insulating means H3.

The member or reed M6 is connected to the member or reed 8'2 (and so theterminal 9!) ;by means of the lead liil and the member or reed Hi l bymeans of the lead [68, which is free at its other end so that it may beconnected in the elevator system and thus connect the stop.- ping coilll!) into the circuit, as will be further described.

It is understood that circuits and the means for starting the elevatorcar in the proper direction, upon registering a call through the hall orcar buttons, need not be shown as my floor selector unit may be usedwith any kind of elevator system, such as conventional automaticpush-button types.

Upon registering a call with a hall or car button at a particular floor,as stated the floor relay coil will become energized to attract thearmature 14 and close the switches formed by the contacts 88 and 9| and90 and 94. This is accomplished since the movement of the car tothebasement floor (in the illustration) has rotated the cam 20 of everyfloor unit above the basement floor in a clockwise direction byengagement of each arm 40 by the follower 38 as the traveler I8 is movedfrom left to right in Fig. 1 to close the switches connecting the hallor car buttons to the floor relay coil for the corresponding floor.

This forms a holding circuit from LI through lead 01, jumper wire 85,terminals 88 and 9|, lead I10 terminals I48 and I60, through the floorrelay coil 60 to L2. Concurrently a circuit is made from LI through lead91, terminals 90 and 94, lead I I8, terminals I06 and I I4, lead I20,through the up coil I12 to the other side of the line L2, thusclosing'the up direction circuit for any floor above the car position,in the illustration given (Fig. 1) above the basement floor.

Since there are no floors below the basement floor, the floor unit34 forthat floor, need not be provided with the contacts I08 and H6, althoughWe prefer to make all units, standard and thus do not distinguishbetween them.

The cam 26 in the next position of movement as illustrated in Figs. 12and 13 (when the car is at a floor), as it is rotated by movement of thefollower 38, pushes the member or reed I48 away from the member I52,which latter inturn leaves the member I58 to bring the terminal I54 outof engagement with the terminal I56. Thus the circuit from the hall orcar buttons is first broken so that the floor relay coil 60 as the carreaches the floor corresponding to that unit I0 will not continue to beenergized except through its holding circuit formed by the terminals I48and I50, as heretofore described.

Further rotation of the cam by the follower 38 as the elevator moves inthe up direction, further, pushes the follower I to move the member orreed I46 away from the member or reed I52 to open the switch formed bythe terminals I and I48 and close the switch formed by the terminals Iand I62 leading to the stopping coil I18.

The switches formed by the terminals I62 and IE0 and the terminals I48and I50 are of the conventional make before break type. That is, the

circuit is made through the stopping coil before the circuit is brokenthrough the floor relay coil as otherwise the stopping coil could notbecome energized.

The circuit through the floor relay coil is broken and the circuitthrough the stopping coil is made when the high point I14 of the noseI32 is reached. This occurs when the follower 38 is positioned betweenthe arms 40 and. 42, as illustrated by the unit 34 in Fig. 1 and theunit 36 in Fig. 2, which happens when the car is at the floorcorresponding to the particular unit.

Should the floor relay coil of a unit I0 be energized by theregistration of a call thereat, as previously described, as the carreaches the corresponding floor, a circuit will be madethrough thestopping coil from LI, terminals I60 and I62 (which are alive since thefloor relay circuit is not yet broken), the lead I63 and the coil to L2to close the stopping coil contacts I14. This forms a holding circuitfor the stopping coil from LI, through contacts I14, the timer coilcontacts I16 through the stopping coil I16 to L2. Thus, if the floorrelay of a unit is energized, when the car reaches the floorcorresponding thereto, it will be stopped by the operation of my unitand the circuit elements which it controls through the stopping coil.

A parallel circuit is made from LI, the contacts I14, through aconventional timer coil I18 to L2. Therefore, after the lapse of aselected time, the timer coil contacts I16 are opened to break thecircuit through the stopping coil I10 and place the system in conditionfor its further operation by de -energizing the stopping coil I10.

If a call is not registered at a particular floor, the car will continueto move therepast since the stopping coil will not be energized,bringing the follower 38 into engagement with the arm 42 to rotate thecam 26 into the position illustrated in Fig. 2 by all the units, exceptthat 36 for the top floor. This is shown in Figs. 14 and 15.

In this position the follower I42 is moved beyond the high point I14 ofthe cam to the low point I60 thereof (Fig. 18), whereat the member orreed I46 moves away from the member or reed I 64, to open the stoppingcoil circuit for that floor, and toward the member and reed I52 to pushit toward the member or reed I 58 and thus close the circuit from thehall or car button through the floor relay coil for that unit that hasbeen passed and thus place the unit in condition to have the coil 64.therefor energized for registration of a call.

Concurrently the follower E60 reaches the high point H9 of the cam nose98 (Fig. 19) to open the coil I12 and close the down coil I82. Thus whenthe car passes a floor unit going in the up direction, it will againspontaneously close the switch formed by the contacts H38 and H6 to thedown coil and simultaneously open the circuit to the up coil andconcurrently place the unit in condition to have a call registered atthat floor by placing the floor relay coil therefor in condition to beenergized.

It should be noted that, if the hall or car button is held in, evenafter the car starts to move other calls, may nevertheless be registeredsince the circuit is first broken through the hall or car buttonsimmediately after the car reaches the floor when terminal I54 is movedaway from terminal I56.

In operation, should the car be at the base ment floor as illustrated inFig. 1 and a call be registered at the top floor, movement up of the caris initiated by conventional means but in the up direction since thecontacts I I4 and I 06 in the up coil I12 circuit for the unitcorresponding to the top floor have been closed by our novel unitconstruction, the floor relay coil of the unit 36 corresponding to thetop floor is energized and the car stop ed when the follower 38 ispositioned as illustrated in Fig. 2. Should the floor relay coil of anyfloor unit below it be energized, the car will stop at that floor first,since the member or reed I46 for that floor unit is moved toward themember or reed 164 to close the circuit through the stopping coiltherefor.

As each cam 26 is rotated into the position illustrated in Fig. 2 (carmoving up) the circuit to the up coil is opened and. the circuit to thedown 11 coil closed. Thus if the car is above a floor it must movedownward to a floor below and if the car is below a floor it must moveupward to a fioor above the car since the directional circuits arespontaneously placed in operative condition by the car movement ineither direction.

It should be noted here that, if desired, since there will be no callsregistered for floors above the top floor, the switch comprised by theterminals Hi3 and lid leading to the up coil, fo the top floor unit maybe dispensed with, although for reasons of convenience in standardizingthe units, as stated with reference to the bottom floor unit, wepreferably do not distinguish between it and any other floor unit.

Should the car, for example, be at the top floor, as illustrated in Fig.2 and a call registered at a floor below, for example at the lowermostfloor, each cam will be moved in a clockwise direction by engagementfirst of the arm 42 and then the arm 49. This causes the follower Hillto be moved from the low point ace of the nose 532 (on th up side)through the high point l'l i neutral or intermediate, the car at thefloor, to the low point I44 (on the down side) and the follower 00 to bemoved from the high point l 59 of the nose 98 (on the up side) throughthe intermediate or neutral point lZl, the car at the floor, to the lowpoint i i8 (on the down side) It should be noted again, that when thecar moves from a lower floor to a higher floor, the cam 29 is rotated ina counter-clockwise direction to reverse the movement of the followersHit and H353.

Through unforeseen circumstances the car may be stopped above or below afloor because the arms M3 o 52 may have changed their position relativeto the position of the car relative to the floor landing. A fraction ofan inch displacement of an arm may mean that the car will be stoppedinches above or below the corresponding floor landing. In order toprovide means for easily adjusting the position of the arms 42 and 4Gwith respect to the follower 33, I preferably provide the constructionillustrated in Fig. 1'7.

The arms 49 and 12 are made from an integral 2i! and each arm 56 and 32,we provide the threaded element i5 8 on one end of which is threadedlymounted the knurled set screw I99, the arm 48 being positioned betweenit and the cam 26, and on the other end of which the knurled set screwI92 is thread-edly mounted, the arm 42 being positioned between it andthe cam Zil.

Each arm is tensioned against its corresponding adjusting set screw sothat movement of the set screw will selectively force the correspondingarm toward the cam 2i! or permit it to move away therefrom against theset screw, as illustrated by the broken lines of Fig. 1'7. Thus the arm4%} or 42 may be easily adjusted in position to cause the elevator tostop at the desired point in the hatchway without the necessity oftaking the floor selector unit apart or electrically disconnecting itfrom the system.

It will now be apparent that we have provided a floor selector unit inwhich the switches required to determine the direction of car movement,initiating starting and stopping of the car,

registration of a call for a floor and the floor relay coil are groupedfor a given floor in a single unitary structure that will be standardfor all buildings.

We have only shown such details of a conventional automatic elevatorsystem as are required for an understanding of our invention since theycan be supplied by those skilled in the art to whom this description isdirected. It will of course be understood that our invention may beapplied to either alternating or direct current installations and toinstallation of more than one speed.

While we have shown in some detail a specific embodiment of ourinvention, we do not intend to be limited thereto, but desire to claimour invention as broadly as the appended claims and the prior art willpermit.

We claim:

1; A floor unit for a selector mechanism comprising a supportingstructure, a relay mounted on said structure having an armature movabletoward and away from the coil thereof, a pair of normally open switchesconnected in parallel and closed by the armature upon energizing thecoil, a cam mounted for movement on the structure, an up direction and adown direction switch controlled by the cam to open the down directionswitch and concurrently close the up direction switch at one position ofthe cam movement and to open the up direction switch and concurrentlyclose the down direction switch at another position of the cam movement,said cam concurrently opening both up and down direction switches in anintermediate position of the cam movement, said up and down directionswitches connected in parallel to one of said pair of normally openswitches, a second pair of normally closed switches connected to thecoil and to the other of said normally open switches and a lastmentioned normally open switch for connection to a stopping coil, saidfirst mentioned normally open switches closed upon energizing said coil,said normally closed switches opened by said cam and the last mentionednormally open switch closed by said cam at said intermediate position ofthe cam movement.

2. In a floor unit for a selector mechanism, a supporting structure, acoil mounted on said structure, an armature normally resiliently heldaway from said coil, a pair of switches controlled by said armature tobe closed thereby upon energizing the coil, a cam movable from a firstposition to a second position and back to the first position, an updirection and a down direction switch, a nose on the cam for operatingthe up and down direction switches and having a low point at one of saidpositions, a neutral point intermediate said positions and a high pointat the other of said positions said nose at the low point opening one ofsaid up and down direction switches and concurrently closing the otherof said up and down switches and at the high point closing the firstmentioned of said up and down direction switches and concurrentlyopening the second mentioned of said up and down switches, said up anddown switches connected in parallel to one of the pair of switchescontrolled by said armature, a group of switches comprising a pair ofnormally closed switches and a normally open switch, a second nose onsaid cam for controlling said group of switches, said second nose havinga low point at one of said cam positions whereat the closed switches andthe open switch of said group are in normal position, a high point atsaid intermediate position whereat the normally closed 13' switches ofthe groups are open and the open switch of the group is .closed and asecond low point at the other of said cam positions whereat the closedswitches and the open switch of said group are in normal position.

3. The floor unit of claim 2, said first normally closed switch of saidgroup being opened by the cam before the second normally closed switchof said group is opened.

4. The floor unit of claim 2, said group of switches being of the makebefore break type.

5. In a floor unit for a selector mechanism, an up direction and a downdirection switch, a group of switches comprising a normally closedswitch and a normally open switch and a cam movable between twopositions for concurrently operating the switches, the up directionswitch being open and the down direction switch being closed at oneposition of the cam movement and the up direction switch being closedand the down direction switch being open at the other position of thecam movement, said group of switches being in normal condition at bothpositions of cam movement and said up and down direction switches beingopen at an intermediate position of cam movement, the said normallyclosed switch of said group being open and the normally open switch ofsaid group being closed at said intermediate position of cam movement.

6. In a floor unit for a selector mechanism, a supporting structure, acam, a shaft on the structure and carrying the cam, cam noses on oneface of the cam and separated by the shaft, the profile of one cam nosehaving a low point, a high point and a neutral point intermediate thelow and high point, the profile of the other cam nosehaving a high pointintermediate two low points, said neutral point on the first cam noseand said high point on the second cam nose being radially opposite eachother and said high point on said first cam nose being radially oppositea low point on said second nose and said low point on said first nosebeing radially opposite the other low point on said second cam nose, anup and a down direction switch having a common member, said commonmember engaged by the first nose to open and close the up and downswitches upon movement of the cam on the shaft, and a pair of switcheshaving a second common member, said second common member engaging saidsecond nose to open and close each one of said pair of switches.

7. In a floor unit, a supporting structure, a coil, an armature mountedin the structure for attraction of the armature upon energizing thecoil, a pair of normally opened switches controlled by the armature andclosed upon energizing the coil, one side of said switch for connectionto one side of a circuit, a, second pair of switches, one of saidswitches being normally opened and the other of said switches beingnormally closed, said switches having a common member, one side of saidswitches connected to the coil and the other side of said switches forconnection in the system, the common member being connected to one ofthe switches controlled by the armature, an up and down switch having acommon member, said common member of the up and down switch beingconnected to the other side of said other switch controlled by thearmature and a cam rotatedly mounted on the structure for opening andclosing each of the said first pair of switches upon movement of thecommon member therefor and concurrently in selective sequence openingand clos- 14 ing the up and down switch upon movement of the commonmember therefore.

8. In a floor unit, a cam, a group of three switches connected inseries, the first pair of switches of said group having a common movablemember, the following pair of switches of said group having a secondmovable common member, and a group of two switches having a movablecommon member, the first two switches of said group of three switchesbeing normally closed and the third switch of said group of threeswitches being normally open, said cam moving the movable common membersof said group of three switches to in sequence open the first twoswitches and close the third switch, said third switch being closedbefore said second switch is open and said cam opening both switches ofsaid group of two switches upon closing the third switch of said groupof three switches and one switch of said group of two switches beingopened and the other of said group of two switches being closed uponopening the third switch of said group of three switches.

9. In a fioor unit, a cam movable between two positions, a group ofswitches connected in series and having a common movable member, saidcam, upon movement in one direction to an intermediate position, movingthe common member to open one switch of said group and close anotherswitch of said group, said cam at both positions moving the commonmember to close the first switch of said group and open the secondswitch of said group and a second group of switches having a secondcommon movable member, movement of the second common member by the camat one position closing one of said second group of switches andconcurrently opening the second of said group of switches and at theother position opening the first switch of said second group of switchesand concurrently closing the second of said second group of switches,both of said switches of said second group of switches being opened atthe intermediate position of the cam by movement of the said secondcommon member.

10. In a fioor unit for a selector mechanism having a relay mountedthereon, a pair of switches for energizing the relay to register a callat the floor unit and for energizing a coil to initiate stopping of anelevator car, said switches having yieldable arms, one arm being commonto both switches and a cam mounted for oscillation between two positionsand engaging the common arm to in sequence open and close said switches,said first mentioned switch being closed and said second mentionedswitch being opened at both positions by movement of the common arm bythe cam and said second mentioned switch being closed and the firstmentioned switch being opened at an intermediate position by movement ofthe common arm by the cam.

11. In a floor selector unit for a selector mechanism having a relaymounted thereon, an up direction and a down direction switch, saidswitches having yieldable arms, one arm being common to both switches,said common arm being connected in a circuit including said relay and acam mounted for oscillation between two positions and engaging thecommon arm, one of said up and down switches being closed and the otherof said up and down switches being opened at one position by movement ofthe common arm by the cam and the first of said up and down switchesbeing opened and the second of said up and down switches being closed atthe other of said positions by movement of the common arm by the cam,both of said up and down switches being opened at an intermediateposition by movement of the common arm by the cam.

12. In a floor selector unit for a selector mechanism having a relaymounted thereon, a call registering switch, a switch for initiating thestopping of a car, an up direction switch, a down direction switch andmeans, movable between two positions, for opening and closing saidswitches, said registering switch being closed at both positions andopened at an intermediate position by said: means, said initiatingswitch being opened at both positions and closed at the intermediateposition by said means, and one of said direction switches being closedand the other direction switch being opened by the means at oneposition, the other direction switch being closed and the firstdirection switch being opened by the means at the other position, bothdirection switches being opened by the means at the intermediateposition.

13. In a floor unit for a selector mechanism; a floor relay coil; astopping coil; a plurality of electrodes forming a group of switcheshaving a common member, the common member movable between a first andsecond electrode of said electrodes and being connected to the floorrelay coil, said first electrode, common member and relay coil in afirstcircuit and said second electrode, common member and floor relaycoil in a 0 second circuit, a third electrode of said electrodes againstthe second electrode, a fourth electrode of said electrodes coupled tosaid stopping coil; said stopping coil arranged in a third circuithaving. contacts therein controlled by the stoprection and in a downdirection for serving a plurality of floors, said elevator system havingcoils forcausing movement of the car in the up and the down direction'aplurality of fioor units, each one of said floor units corresponding toa floor,

a plurality of said floor units, each unit removably mounted in theselector mechanism to form a side by side group thereof, a travelerreciprocably movable from and between each end of the group of units, acam rotatably mounted in each unit, an arm extending up from each sideof the cam in a unit in the path of movement of the traveler across theselector mechanism in position to be engaged by the traveler uponmovement thereof across the selector mechanism to thereby rotate thecam, each unit having a down direction switch for connection to a coilfor cansing movement of an elevator car in the down direction and an updirection switch for connection to a car for causing movement of theelevator car in the up direction, each down direction switch of eachfloor unit being open when the up direction switch of that unit isclosed and each up direction switch of each unit being open when thedown direction unit of that switch is closed, a floor relay coil forinitiating movement of the elevator car; each unit having a; switchconnected to the floor relay coil, said switch connected to the floorrelay being closed upon oscillation of the cam by engagement of the armby the traveler. J

15. The selector mechanism of claim 14, said arms being resilient topermit movement therepast of the traveler.

16. The selector mechanism of claim 14' and including a member extendingthrough the arms on each side of a cam on a unit and a means on themember in engagement with each cam for selectively adjustingthe positionof each arm with respect to the cam to thereby select the positionwhereat the arm is engaged by the traveler. Y

17'. A floor selector for an automatic elevator system serving abuilding having a plurality of floors and said system having a carreciprocable between a first terminal floor and a second terminal floorand comprising a housing, a traveler mounted in the housing forreciprocation thereacrcss corresponding to movement of the car betweenthe first terminal floor and the second terminal floor, a plurality ofcams spaced in a line of cams in the housing in the path ofreciprocation of the traveler, each cam corresponding to a floor of thebuilding, a first of said plurality of cams at a first end of said lineof cams corresponding to the first terminal floor and a second of saidplurality of cams at a second end of said line of cams corresponding tothe second terminal floor, a pivot securing each cam in'the housing,anarm secured on each side of each cam and in the path ofreciprocationof the traveler whereby the cam is moved counterclockwiseon the pivot upon engagement of an arm and movement of the traveler fromthe first end toward the second end of the line of cams and in clockwisedirection on the pivot upon engagement of the other arm and movement ofthe traveler from the second end toward the first end of the line ofcams, a group of switches to be selectively and sequentially opened andclosed upon movement of the cam by the traveler, a pair of switches tobe selectively opened and closed by movement of said cam in sequencewith the opening and closing of said group of switches, and including amember extending between and through the arms on each cam and anadjusting means for selectively positioning each arm on a cam relativelyto the said cam.

SERGE MIGNOCCI-II. LOUIS MIGNOCCl-II.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATEJI'IKE:

Number Name Date 593,121 Quarin Feb. 2, 1897 1,669,509 Eyrse May 15,1928 1,983,794 Fitzsimmons Dec. 11, 1934 2,020,733 Moehler Nov. 12, 19352,279,220 Baum Apr. 7, 1942 2,318,761 Curtis May 11, 1943 2,319,946Osborne et al May 25, 1943 2,322,563 Bruno June 22, 1943 2,431,929 GoffDec. 2, 1947

